Many 8-oz cold brews land in the 100–200 mg caffeine range, shaped by brew strength and serving size.

Coffee usually has more caffeine per cup than tea, yet brew style, serving size, and steep time can flip the gap.

A 12-oz can of Coca-Cola lists 34 mg of caffeine, so an 8-oz cup lands near 23 mg when poured straight.

A standard 8-ounce cup of brewed dark roast often lands around 90–100 mg of caffeine, with brew strength and mug size driving most changes.

A typical green tea bag brews a cup with 20–45 mg of caffeine, with brand, water heat, and steep time shifting the range.

A typical 12 oz cold brew lands around 120–170 mg of caffeine, while a 16 oz café cold brew often sits near 200–260 mg, based on recipe and size.

An 8-ounce mug of brewed coffee often lands near 95 mg of caffeine, yet roast, dose, and brew style can shift it a lot.

A 12-oz can of Coca-Cola has 34 mg of caffeine, and a 20-oz bottle lands near 57 mg when you scale the same recipe by volume.

A 12-oz (355 mL) can of Coca-Cola in the U.S. lists 34 mg of caffeine.

A typical Starbucks brewed coffee lands at 260 mg (Tall), 330 mg (Grande), or 412 mg (Venti).